CodeSampleX

Sample

@tiptap/pm 3.11.0: undoNoScroll

Verified sample for npm @tiptap/pm 3.11.0: undoNoScroll. The contract ran on node 22 · linux debian/x64 · docker and passed: undoNoScroll is a function…

sha256:bf1475b06c37b11f8a2bc223f3c7eedada0f0f83a5d3d847c9870d2b25d45f62

This network offers one thing: a sample that builds. It ran the sample in a sandbox and kept the signed receipt. It grades nothing and warrants nothing — whether the same code builds where you are is not something it measured. How many distinct signing keys filed a passing contract receipt. One is the author alone; more than one means somebody else built it too. A key is self-generated with nothing registered behind it, so it counts keys, not people. MIT-0

Execution evidence

The declared environment and the signed runs are kept apart, so you can see exactly what this sample ran and where.

Evidence basis
Signed contract pass
Verification receipts
1
Signing keys that built it
1
Declared environment node 22.23 linux 24 · ubuntu · glibc 2.39 x64 node 22.23 javascript npm 10

Verification-run environments

Environment Contract Stages Run
node 22 · linux debian/x64 · docker ed25519:c1973797be207ac4 PASS compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS
CONTAINER_RUN · node-typescript@1node:22@sha256:8a34c4ab3ea2…		 2026-09-15

Case

HOW
Goal
verify @tiptap/pm.undoNoScroll in pkg:npm/%40tiptap/pm@3.11.0
Packages
Symbols
  • @tiptap/pm.undoNoScroll
Environment
node 22.23.2
Created
2026-09-15T06:40:52Z

Contract

  1. undoNoScroll is a function exported by @tiptap/pm/history
  2. undoNoScroll returns false when history is empty on initial editor state
  3. undoNoScroll returns false when history plugin is not attached to editor state
  4. undoNoScroll returns true without modifying state when dispatch is omitted and undo is possible
  5. undoNoScroll reverts the last document edit when dispatch is provided
  6. undoNoScroll creates a transaction without setting scrolledIntoView flag
  7. undoNoScroll allows undone changes to be reapplied via redo
  8. undoNoScroll sequentially reverts multiple edits across closed history steps
  9. undoNoScroll returns false once all history steps have been undone

Files

  • PROMPT.md
  • csx.json
  • index.mjs
  • package-lock.json
  • package.json
  • spec.json
  • test/contract.mjs

Download the source artifact (tar.gz)

Source

PROMPT.md
Clean-room public code sample — generation instructions

Write a brand-new, minimal, self-contained code sample in this clean-room directory.
Do not copy, paraphrase, or reference any existing project source. Work only from this spec.

A csx.json manifest scaffold already exists. Do not recreate it from memory. Preserve its case.goal, packages and symbols; fill its empty case.contract with exact assertions and correct its environment, commands and verifierAdapter for the files you generate.

Goal: verify @tiptap/pm.undoNoScroll in pkg:npm/%40tiptap/pm@3.11.0
Kind: HOW

Use EXACTLY these public packages and versions:
  - pkg:npm/%40tiptap/pm@3.11.0
Demonstrate these symbols/APIs:
  - @tiptap/pm.undoNoScroll

Rules:
  - One focused purpose; the smallest project that proves the goal.
  - Include a contract test (test/contract.*) that runs OFFLINE and exits 0 exactly when the goal behavior works.
  - Pin every dependency with a lockfile so resolution is reproducible.
  - No secrets, credentials, or tokens. No real URLs (only example.com or localhost). No absolute paths.
  - No personal names, emails, company names, or project identifiers of any kind.
  - No binaries and no generated output (node_modules, dist, target, venv, .git, .env).
  - Keep it under 200 files and 256KB packed.
csx.json
{"case":{"caseId":"case:sha256:0f7eff429a0b898b6920a1b3f9e416fb46bead5f0ee6444ed1e22ab72f4d68fe","contract":["undoNoScroll is a function exported by @tiptap/pm/history","undoNoScroll returns false when history is empty on initial editor state","undoNoScroll returns false when history plugin is not attached to editor state","undoNoScroll returns true without modifying state when dispatch is omitted and undo is possible","undoNoScroll reverts the last document edit when dispatch is provided","undoNoScroll creates a transaction without setting scrolledIntoView flag","undoNoScroll allows undone changes to be reapplied via redo","undoNoScroll sequentially reverts multiple edits across closed history steps","undoNoScroll returns false once all history steps have been undone"],"goal":"verify @tiptap/pm.undoNoScroll in pkg:npm/%40tiptap/pm@3.11.0","kind":"HOW","packages":["pkg:npm/%40tiptap/pm@3.11.0"],"schemaVersion":1,"symbols":["@tiptap/pm.undoNoScroll"]},"contractCommand":["node","test/contract.mjs"],"environment":{"arch":"x64","distro":"ubuntu","ecosystem":"npm","executionContext":"node","language":"javascript","libc":"glibc","libcVersion":"2.39","os":"linux","osVersionBucket":"24","packageManager":"npm","packageManagerVersion":"10.9.8","runtime":"node","runtimeVersion":"22.23.2","schemaVersion":1},"license":"MIT-0","packages":["pkg:npm/%40tiptap/pm@3.11.0"],"schemaVersion":1,"subject":"pkg:npm/%40tiptap/pm@3.11.0","symbols":["@tiptap/pm.undoNoScroll"],"verifierAdapter":"node-typescript@1"}
index.mjs
import {
  undoNoScroll,
  undo,
  redo,
  history,
  undoDepth,
  redoDepth,
  closeHistory,
  redoNoScroll,
  isHistoryTransaction
} from '@tiptap/pm/history';
import { EditorState, Plugin } from '@tiptap/pm/state';
import { schema } from '@tiptap/pm/schema-basic';

export {
  undoNoScroll,
  undo,
  redo,
  history,
  undoDepth,
  redoDepth,
  closeHistory,
  redoNoScroll,
  isHistoryTransaction,
  EditorState,
  Plugin,
  schema
};

export default undoNoScroll;
package-lock.json
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package.json
{
  "name": "sample-tiptap-pm-undonoscroll",
  "version": "1.0.0",
  "type": "module",
  "private": true,
  "dependencies": {
    "@tiptap/pm": "3.11.0"
  }
}
spec.json
{
  "schemaVersion": 1,
  "goal": "verify @tiptap/pm.undoNoScroll in pkg:npm/%40tiptap/pm@3.11.0",
  "kind": "HOW",
  "packages": [
    "pkg:npm/%40tiptap/pm@3.11.0"
  ],
  "symbols": [
    "@tiptap/pm.undoNoScroll"
  ]
}
test/contract.mjs
import assert from 'node:assert/strict';
import {
  undoNoScroll,
  undo,
  redo,
  history,
  undoDepth,
  redoDepth,
  closeHistory,
  EditorState,
  schema
} from '../index.mjs';

// 1. undoNoScroll is a function exported by @tiptap/pm/history
{
  assert.equal(typeof undoNoScroll, 'function', 'undoNoScroll must be a function');
}

// 2. undoNoScroll returns false when history is empty on initial editor state
{
  const state = EditorState.create({ schema, plugins: [history()] });
  let dispatched = false;
  const result = undoNoScroll(state, () => { dispatched = true; });
  assert.equal(result, false, 'undoNoScroll must return false when no history exists');
  assert.equal(dispatched, false, 'dispatch must not be called when undoNoScroll returns false');
}

// 3. undoNoScroll returns false when history plugin is not attached to editor state
{
  const state = EditorState.create({ schema });
  const tr = state.tr.insertText('Edit without history');
  const stateAfter = state.apply(tr);
  assert.equal(undoNoScroll(stateAfter), false, 'undoNoScroll must return false without history plugin');
}

// 4. undoNoScroll returns true without modifying state when dispatch is omitted and undo is possible
{
  let state = EditorState.create({ schema, plugins: [history()] });
  state = state.apply(state.tr.insertText('Sample text'));
  const canUndo = undoNoScroll(state);
  assert.equal(canUndo, true, 'undoNoScroll without dispatch must return true when undo is available');
  assert.equal(state.doc.textContent, 'Sample text', 'state must remain unmodified when dispatch is omitted');
}

// 5. undoNoScroll reverts the last document edit when dispatch is provided
{
  let state = EditorState.create({ schema, plugins: [history()] });
  state = state.apply(state.tr.insertText('First text'));
  assert.equal(state.doc.textContent, 'First text');

  const undone = undoNoScroll(state, (tr) => { state = state.apply(tr); });
  assert.equal(undone, true, 'undoNoScroll must return true when dispatching undo');
  assert.equal(state.doc.textContent, '', 'document text must be reverted after undoNoScroll');
}

// 6. undoNoScroll creates a transaction without setting scrolledIntoView flag
{
  let state = EditorState.create({ schema, plugins: [history()] });
  state = state.apply(state.tr.insertText('Check scroll flag'));

  let undoTr = null;
  undo(state, (tr) => { undoTr = tr; });
  assert.equal(undoTr.scrolledIntoView, true, 'regular undo must set scrolledIntoView to true');

  let undoNoScrollTr = null;
  undoNoScroll(state, (tr) => { undoNoScrollTr = tr; });
  assert.equal(Boolean(undoNoScrollTr.scrolledIntoView), false, 'undoNoScroll must not set scrolledIntoView');
}

// 7. undoNoScroll allows undone changes to be reapplied via redo
{
  let state = EditorState.create({ schema, plugins: [history()] });
  state = state.apply(state.tr.insertText('Text to undo and redo'));
  undoNoScroll(state, (tr) => { state = state.apply(tr); });
  assert.equal(state.doc.textContent, '');

  const redone = redo(state, (tr) => { state = state.apply(tr); });
  assert.equal(redone, true, 'redo must return true after undoNoScroll');
  assert.equal(state.doc.textContent, 'Text to undo and redo', 'redo must restore content reverted by undoNoScroll');
}

// 8. undoNoScroll sequentially reverts multiple edits across closed history steps
{
  let state = EditorState.create({ schema, plugins: [history()] });
  state = state.apply(state.tr.insertText('Step 1 '));
  state = state.apply(closeHistory(state.tr));
  state = state.apply(state.tr.insertText('Step 2 '));
  state = state.apply(closeHistory(state.tr));
  state = state.apply(state.tr.insertText('Step 3'));
  assert.equal(state.doc.textContent, 'Step 1 Step 2 Step 3');

  undoNoScroll(state, (tr) => { state = state.apply(tr); });
  assert.equal(state.doc.textContent, 'Step 1 Step 2 ');

  undoNoScroll(state, (tr) => { state = state.apply(tr); });
  assert.equal(state.doc.textContent, 'Step 1 ');

  undoNoScroll(state, (tr) => { state = state.apply(tr); });
  assert.equal(state.doc.textContent, '');
}

// 9. undoNoScroll returns false once all history steps have been undone
{
  let state = EditorState.create({ schema, plugins: [history()] });
  state = state.apply(state.tr.insertText('Only step'));
  undoNoScroll(state, (tr) => { state = state.apply(tr); });
  assert.equal(undoNoScroll(state), false, 'undoNoScroll must return false when all history steps are exhausted');
}

console.log('All @tiptap/pm.undoNoScroll contract assertions passed.');

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